Will the iBookstore allow 'home sharing'?

One of the very cool features in version 9 of iTunes is ‘home sharing’. The function lets users on the same network share their content. For example, if I buy an iPhone app, up to five people on the office network can grab the app off my machine, load it into their iTunes and sync it with their iPhone. Makes good sense.

Wonder whether book publishers will allow the same functionality with their books? Given that publishers seem to be wedded to DRM, it would be a huge leap and I hope it’s one they take.